Rootkit Hunter check_update.sh symlink
| rootkit-hunter-checkupdate-symlink (20279) |  Medium Risk |
Description:
Rootkit Hunter (rkhunter) could allow a local attacker to launch a symlink attack. check_update.sh script and the main Rootkit Hunter script create insecure temporary files with predictable filenames. A local attacker could exploit this vulnerability by creating a symbolic link from a temporary file, which could allow the attacker to create or overwrite arbitrary files on the system with the privileges of the user.
Platforms Affected:
- Gentoo, Linux
- Gentoo, rootkit hunter 1.2
- Gentoo, rootkit hunter 1.2.1
- Gentoo, rootkit hunter 1.2.2
- Gentoo, rootkit hunter 1.2.3
Remedy:
For Gentoo Linux:
Upgrade to the latest version of Rootkit Hunter (1.2.3-rl and later), as listed in Gentoo Linux Security Announcement GLSA 200504-25. See References.
Consequences:
File Manipulation
References:
- BID-13399: Rootkit Hunter Local Insecure Temporary File Creation Vulnerability
- CVE-2005-1270: The (1) check_update.sh and (2) rkhunter script in Rootkit Hunter before 1.2.3-r1 create temporary files with predictable file names, which allows local users to overwrite arbitrary files via a symlink attack.
- GLSA-200504-25: Rootkit Hunter: Insecure temporary file creation
- OSVDB ID: 15861: Rootkit Hunter rkhunter Symlink Arbitrary File Overwrite
- SA15127: Rootkit Hunter Insecure Temporary File Creation
Reported:
Apr 26, 2005
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